Yellow fever - World Health Organization (WHO)
Jul 10, 2025 · Yellow fever is an epidemic-prone vector-borne vaccine preventable viral disease that is transmitted to humans by the bites of infected mosquitos. In some of the unvaccinated individuals, …
Vaccines and vaccination against yellow fever: WHO Position Paper ...
Jul 5, 2013 · This updated position paper on yellow fever (YF) vaccines and vaccination replaces the previous 2003 WHO position paper and summarizes recent developments in the field. …
Yellow Fever - World Health Organization (WHO)
Public health aspects Yellow fever (YF) is a mosquito-borne, viral haemorrhagic fever that is endemic in tropical areas of Africa and South America, where is has caused outbreaks at irregular intervals for …
Countries with risk of yellow fever transmission and countries ...
Nov 18, 2022 · This list includes only countries or areas where WHO has determined there is a risk of yellow fever transmission and/or where there are country requirements for travellers.
Yellow Fever - West and Central Africa
Dec 23, 2021 · Yellow fever (YF) is an acute viral disease transmitted by infected mosquitoes (including Aedes sp. and Haemogogus sp). Transmission can be amplified in circumstances where the Aedes …
Yellow fever – African Region (AFRO)
Since the beginning of 2023, and as of 25 February 2024, a total of 13 countries in the WHO African Region have documented probable and confirmed cases of yellow fever (YF), namely Burkina Faso, …
Yellow fever vaccine: WHO position on the use of fractional doses ...
Jun 1, 2017 · This updated position paper on yellow fever (YF) vaccines and vaccination replaces the previous 2003 WHO position paper and summarizes recent developments in the field. …
Risk mapping - World Health Organization (WHO)
The scarcity of well documented and consistent methods in YF risk assessment and the changing global epidemiology of the disease emphasised the need to revise classification and standardise the …
Yellow Fever - World Health Organization (WHO)
Yellow fever (YF) is an infection caused by a virus of the family Flaviviridae and it is transmitted by mosquitoes.
Immunization, Vaccines and Biologicals
Jul 10, 2025 · The Immunization, Vaccines and Biologicals department is responsible for targeting vaccine-preventable diseases, guiding immunization research and establishing immunization policy.